The Last Kids on Earth and the Monster Dimension

The ninth installment in the bestselling series finds the last kids narrowly escaping a forbidden fortress, facing dire circumstances as Thrull prepares to complete the Tower and Rezzoch threatens to invade Earth. With the world hanging in the balance, Jack discovers that his Cosmic Hand possesses unexpected power, giving him a glimmer of hope. To uncover the truth and confront the looming threat, he must embark on a perilous journey into the monster dimension.